html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}
body {
  display: flex;
  flex-flow: column;
}
.form {
  flex: auto;
  margin: 10px;
  display: flex;
  flex-flow: column;
}
.form-item {
  display: flex;
  flex-flow: row nowrap;
}
.form-item > span {
  padding-right: 5px;
}
.form-item + .form-item {
  margin-top: 5px;
}
.form-item > file-input {
  flex: auto;
}
select {
  width: 250px;
  outline: none;
}
#start {
  margin-left: 5px;
}
#log {
  flex: auto;
  resize: none;
  outline: none;
}
